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Research focuses on how GHK-Cu upregulates the gene expression of collagen type I, collagen type III, elastin, and proteoglycans within dermal fibroblasts, promoting structural tissue density and resilience
For example, the number of syringe units representing 250 mcg changes depending on how many milligrams are in the vial and how much liquid was used during preparation
Ramos et al., 2021
Strict vegans and vegetarians may develop deficiency over time, as B12 is found almost exclusively in animal products
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